Journal of Inorganic Materials ›› 2015, Vol. 30 ›› Issue (6): 633-638.doi: 10.15541/jim20140573

• Orginal Article • Previous Articles     Next Articles

Mechanical Property and Deformation Behavior of SOFCs

Ling-Jiang LIANG(), Kai LI, Dong YAN, Ben MA, Jia-Jun YANG, Jian PU(), Bo CHI, Jian LI   

  1. School of Materials Science and Engineering, State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2014-11-09 Revised:2015-01-11 Online:2015-06-04 Published:2015-05-22
  • About author:LIANG Ling-Jiang. E-mail: lianglingjiang411@126.com
  • Supported by:
    National Natural Science Foundation of China(U1134001);National High Technology Research and Development Programof China(“863” Program)(2011AA050702)

Abstract:

Anode-supported planar solid oxide fuel cells (SOFCs) were successfully fabricated by tape casting, screen printing, and co-sintering technologies. Evaluated by the ring-on-ring and double-torsion technique, the flexure strength and fracture toughness of the single-cell are 156.69 MPa and 2.51 MPa•m1/2, respectively. And after the anode support being reduced from ceramic (NiO/YSZ) to cermet (Ni/YSZ), the flexure strength and fracture toughness change to be 104.48 MPa and 3.95 MPa•m1/2, respectively. Cell flexural deformation test indicates that with reduction of the anode support, the flexural deformation increases, the force for flattening cell increases (from 108 N to 184 N), and the rupture-resisting performance is enhanced. In conclusion, with notable improvement of cell fracture toughness after anode support reduction, the adverse influence caused by flexural deformation can be effectively mitigated and the comprehensive mechanical property can be improved.

Key words: SOFC, flexure strength, fracture toughness, flexural deformation

CLC Number: 

  • TQ174